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Renesas IDT71024S15YI
- Part No.:
- IDT71024S15YI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71024S15YI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,273
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Product details
Overview
IDT71024S15YI from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM operating at 5 V, with 15 ns access and cycle times, industrial temperature range (–40°C to +85°C), and TTL-compatible bidirectional I/O - used in real-time data buffering for industrial PLCs, network packet memory, and legacy embedded controllers requiring zero-refresh asynchronous operation.
For engineers reviewing the IDT71024S15YI datasheet, IDT71024S15YI pinout, IDT71024S15YI application, or IDT71024S15YI equivalent, key selection criteria include guaranteed 15 ns tAA/tRC timing under industrial conditions, dual chip select architecture with OE control, SOJ-32 package compatibility, and low-power standby modes (ISB1 = 10 mA).
Technical Context
The IDT71024S15YI implements fully static asynchronous logic with no clocks or refresh required. Its dual CS architecture (CS1 active-low, CS2 active-high) enables hierarchical memory decoding, while OE allows output gating independent of chip selection - supporting interleaved read/write sequences without bus contention.
All inputs and outputs are TTL-compatible (VIH = 2.2 V min, VIL = 0.8 V max), and the device supports three power states: active (ICC = 155 mA), standby (ISB = 40 mA), and full standby (ISB1 = 10 mA), with fast output enable propagation (tOE = 7 ns max) and chip deselect-to-HiZ (tCHZ = 7 ns max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access/Cycle Time | 15 ns max (industrial grade), enabling 66.7 MHz burst read capability |
| Supply Voltage | 5.0 V ± 10% (4.5–5.5 V), single-rail operation with no auxiliary supplies |
| Operating Temperature | –40°C to +85°C, qualified for extended industrial environments |
| Standby Current | ISB1 = 10 mA max (CMOS-level deselect), reducing idle power by 75% vs active mode |
| I/O Compatibility | TTL-level inputs/outputs (VIH ≥ 2.2 V, VOL ≤ 0.4 V @ 8 mA), direct interfacing with 74LS/ALS logic |
| Package | 32-pin Plastic SOJ, 400-mil body width (PBG32), JEDEC MS-012AC compliant |
Pinout & Package
32-pin Plastic SOJ (400-mil width, PBG32), surface-mount package with gull-wing leads, moisture sensitivity level (MSL) 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (A0 LSB to A16 MSB) selecting one of 131,072 bytes |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states |
| CS1, CS2 | Chip Select Inputs | CS1 active-low, CS2 active-high; both must be asserted for memory access |
| OE | Output Enable | Active-low control of output drivers; enables read data gating without deselecting chip |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on rising edge when CS active |
| VCC, GND | Power Supply | Single 5 V supply with dedicated ground pin (Pin 16); decoupling required near VCC |
| NC | No Connect | Pin 1 is unconnected; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Zero-refresh static architecture | Eliminates external refresh circuitry and timing constraints in microcontroller-based systems |
| Dual chip select with independent OE | Enables banked memory mapping and dynamic bus sharing without additional logic |
| Industrial-grade 15 ns timing | Guaranteed performance across –40°C to +85°C, supporting deterministic real-time response |
| Three-tier power management | Supports active (155 mA), standby (40 mA), and deep standby (10 mA) modes for energy-sensitive designs |
| TTL-compatible I/O | Direct connection to legacy 5 V logic families without level-shifting components |
Applications
| Industrial PLC Data Buffer | Legacy Network Switch Packet Memory |
|---|---|
Use Scenario: Storing transient I/O scan data and ladder logic state variables in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Asynchronous byte-wide SRAM providing deterministic 15 ns read/write access for cyclic scan execution. Use Value: Enables sub-millisecond I/O update cycles under full industrial temperature stress without refresh overhead or timing jitter. | Use Scenario: Holding Ethernet frame buffers and forwarding table entries in 10/100 Mbps managed switches with legacy 5 V bus architecture. IC Role / Device Role / Timing Role: Non-volatile-cached packet memory interfaced directly to 8-bit microcontroller or ASIC data bus. Use Value: Delivers 66.7 MHz effective bandwidth using simple address strobing, avoiding FIFO complexity or DRAM controller overhead. |
| Avionics Display Frame Buffer | Medical Imaging Control Memory |
Use Scenario: Supporting rasterized display updates in ruggedized cockpit displays where EMI resilience and thermal stability are critical. IC Role / Device Role / Timing Role: Dual-port-capable SRAM (via CS/OE sequencing) acting as pixel line buffer synchronized to video timing generator. Use Value: Guarantees 15 ns access across –40°C to +85°C, eliminating frame tearing or timing-induced artifacts in safety-critical displays. | Use Scenario: Storing calibration coefficients, sensor configuration registers, and real-time acquisition metadata in portable ultrasound and MRI control units. IC Role / Device Role / Timing Role: Fast-access configuration memory mapped into microcontroller's peripheral address space for low-latency parameter updates. Use Value: Reduces boot and recalibration latency by 40% vs EEPROM, with full industrial temp reliability and no write endurance limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-45ZSXIT | 45 ns speed grade, 3.3 V core (5 V tolerant I/O), 32-pin TSOP-II package | Requires level translation for pure 5 V systems; lower power but slower timing | Select when migrating to 3.3 V domains or when board space favors TSOP over SOJ |
| AS6C1008-15PCN | 15 ns speed, 5 V operation, 32-pin SOP package (not SOJ), higher ICC (180 mA) | SOP footprint incompatible with SOJ socket; lacks ISB1 deep-standby mode | Choose only if SOJ-to-SOP adapter is acceptable and full-standby current is not critical |
Compared with CY62128EV30LL-45ZSXIT and AS6C1008-15PCN, the IDT71024S15YI uniquely delivers 15 ns industrial-grade timing in a Pb-free SOJ-32 package with 10 mA ISB1 deep-standby - making it optimal for drop-in replacement in legacy 5 V industrial designs where thermal margin and pinout fidelity are mandatory.
Availability
IDT71024S15YI is available at Aetrix Electronics and suitable for industrial PLCs, legacy network equipment, avionics displays, and medical imaging control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT71024S15YI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT71024S15YI belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for 5 V embedded systems needing deterministic, zero-refresh memory with industrial temperature resilience and TTL interoperability.
FAQ
What is the maximum guaranteed access time for IDT71024S15YI across its full industrial temperature range?
The IDT71024S15YI guarantees a maximum address access time (tAA) of 15 ns and maximum read cycle time (tRC) of 15 ns over the full –40°C to +85°C operating range, as confirmed in the AC Electrical Characteristics table for the "Ind." column under 71024S15 speed grade. This specification is production-tested and applies to all units shipped.
Does IDT71024S15YI require external refresh circuitry or clock signals to retain data?
No, the IDT71024S15YI is a fully static RAM and requires no clocks, timers, or refresh cycles to retain data. Its asynchronous design uses only address, control (CS1/CS2/OE/WE), and power (VCC/GND) signals - making it ideal for microcontroller-based systems where deterministic timing and minimal support circuitry are essential.
Which package type does IDT71024S15YI use, and is it RoHS-compliant?
IDT71024S15YI uses a 32-pin 400-mil Plastic SOJ package (PBG32) and is RoHS-compliant and lead-free ("Green" per ordering code YG/YGI). The device meets Renesas' restricted hazardous substance requirements and is rated MSL-3 per J-STD-020, requiring bake prior to reflow if exposed beyond floor life.
How does the dual chip select (CS1/CS2) architecture of IDT71024S15YI improve system design flexibility?
The IDT71024S15YI's CS1 (active-low) and CS2 (active-high) inputs allow hierarchical memory decoding - for example, using CS2 to enable a memory bank and CS1 to select individual devices within it. This eliminates need for external AND gates and supports clean address-space partitioning in multi-SRAM systems without bus contention.
Can IDT71024S15YI operate reliably with standard 74LS-series logic without level shifters?
Yes, IDT71024S15YI features true TTL-compatible inputs and outputs: VIH minimum is 2.2 V, VIL maximum is 0.8 V, and VOL is ≤0.4 V at 8 mA sink. This ensures direct, robust interfacing with 74LS, 74ALS, and other legacy 5 V logic families without external level translation or pull-up resistors.
IDT71024S15YI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
IDT71024S15YI FAQ
1.How can I place an order for IDT71024S15YI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S15YI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for IDT71024S15YI reliable?
The price and inventory of IDT71024S15YI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S15YI is usually 5 days.
3.What payment methods are accepted for IDT71024S15YI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S15YI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S15YI?
IDT71024S15YI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S15YI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for IDT71024S15YI?
For technical support, including IDT71024S15YI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S15YI requirements.
6.How does Aetrix verify that IDT71024S15YI is sourced from the original manufacturer or authorized distributors?
All IDT71024S15YI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IDT71024S15YI meets industry standards.
7.What is the process for return or replacement of IDT71024S15YI?
All IDT71024S15YI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S15YI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The IDT71024S15YI part is unused and in its original packaging.
Return procedure for IDT71024S15YI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S15YI Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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